.cv-fraction-lab { margin: 2.5rem 0; padding: clamp(1rem, 3vw, 2rem); border: 2px solid var(--ink); border-radius: 17px; background: var(--white); color: var(--ink); min-width: 0; scroll-margin-top: 7rem; }
.article-body .cv-fraction-lab h2 { margin: .35rem 0 1rem; font-size: clamp(1.5rem, 4vw, 2rem); line-height: 1.25; }
.article-body .cv-fraction-lab h3 { margin: 0 0 .75rem; font-size: 1.15rem; line-height: 1.4; }
.article-body .cv-fraction-lab p { font-size: 1rem; line-height: 1.65; }
.article-body .cv-fraction-lab .cv-frac-kicker { margin: 0; color: var(--ink-2); font-size: .8rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.cv-fraction-lab [hidden] { display: none !important; }
.cv-frac-workspace { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 1.5rem; margin-top: 1.5rem; align-items: start; }
.cv-frac-workspace > div { min-width: 0; }
.cv-frac-form fieldset { min-width: 0; border: 0; padding: 0; margin: 0; }
.cv-frac-form legend { font-size: 1.05rem; font-weight: 800; padding: 0 0 1rem; }
.cv-frac-input-group { border: 1px solid var(--line-strong); border-radius: 9px; padding: .8rem; margin-bottom: 1rem; }
.cv-frac-inputs { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: .75rem; }
.cv-frac-inputs label { display: flex; flex-direction: column; justify-content: space-between; font-size: .9375rem; font-weight: 700; min-width: 0; overflow-wrap: anywhere; }
.cv-frac-inputs select { width: 100%; min-width: 0; min-height: 48px; font: inherit; font-size: 1rem; color: var(--ink); background: #fff; border: 1px solid #678478; border-radius: 7px; padding: .6rem; margin-top: .4rem; }
.cv-fraction-lab button { min-height: 48px; white-space: normal; max-width: 100%; }
.cv-fraction-lab :disabled { opacity: .55; cursor: not-allowed; }
.cv-fraction-lab :focus-visible { outline: 3px solid var(--ink); outline-offset: 4px; }
.cv-frac-presets { display: flex; flex-direction: column; gap: .65rem; align-items: stretch; }
.cv-frac-view { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; justify-content: space-between; }
.cv-frac-view .button { font-size: .9375rem; }
.cv-frac-view [aria-pressed="true"] { background: var(--ink); color: var(--white); }
.article-body .cv-fraction-lab .cv-frac-help { font-size: .9375rem; color: #42594e; margin: .8rem 0; }
.cv-frac-notice { padding: .8rem; border-left: 3px solid var(--ink); background: #f1ebd9; }
.cv-frac-row { margin: 1rem 0; }
.cv-frac-row strong { display: block; margin: 0 0 .4rem; font-size: 1.1rem; }
.cv-frac-bar { display: grid; width: 100%; height: 36px; border: 1px solid #3f5b50; background: #f0f1e8; }
.cv-frac-bar > span { min-width: 0; border-right: 1px solid #3f5b50; }
.cv-frac-bar > span:last-child { border-right: 0; }
.cv-fraction-lab .is-a { background: #b8d94f; }
.cv-fraction-lab .is-b { background: repeating-linear-gradient(135deg, #ffc391 0, #ffc391 5px, #b86a2a 5px, #b86a2a 7px); }
.cv-frac-sum { border-top: 1px solid var(--line-strong); margin-top: 1.25rem; padding-top: 1.25rem; }
.cv-frac-legend { display: flex; gap: 1rem; }
.cv-frac-legend span { display: inline-flex; align-items: center; gap: .4rem; font-weight: 750; }
.cv-frac-legend i { display: inline-block; width: 22px; height: 18px; border: 1px solid #3f5b50; }
.cv-frac-unit-label { display: block; font-size: .9375rem; margin: .75rem 0 .35rem; }
.cv-frac-equation { display: block; margin: 1rem 0 .7rem; padding: .8rem; background: #e8f0d3; border-left: 4px solid var(--ink); font-size: 1.15rem; overflow-wrap: anywhere; font-variant-numeric: tabular-nums; }
.cv-frac-explanation, .cv-frac-question details { border: 1px solid var(--line-strong); background: var(--paper); border-radius: 9px; margin-top: 1.5rem; }
.cv-fraction-lab summary { min-height: 48px; padding: .85rem 1rem; font-weight: 750; font-size: 1rem; cursor: pointer; }
.cv-fraction-lab details p { margin: .4rem 1rem 1rem; }
.cv-frac-question { margin-top: 1.5rem; padding-top: 1.5rem; border-top: 1px solid var(--line-strong); }
.cv-frac-question details { margin-top: .75rem; }
.cv-frac-status { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
@media(max-width:760px) { .cv-frac-workspace { grid-template-columns: minmax(0,1fr); } .cv-frac-presets { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); } .cv-frac-presets [data-frac-reset] { grid-column: 1 / -1; } }
@media(max-width:380px) { .cv-frac-presets { grid-template-columns: minmax(0,1fr); } }